--- /dev/null
+use strict;
+use warnings;
+
+use Test::More tests => 6;
+use Test::Exception;
+
+use Mouse::Meta::TypeConstraint;
+use Mouse::Util::TypeConstraints;
+
+
+TODO:
+{
+ local $TODO = 'type names are not validated in the TC metaclass';
+
+ throws_ok { Mouse::Meta::TypeConstraint->new( name => 'Foo-Bar' ) }
+ qr/contains invalid characters/,
+ 'Type names cannot contain a dash';
+}
+
+lives_ok { Mouse::Meta::TypeConstraint->new( name => 'Foo.Bar::Baz' ) }
+'Type names can contain periods and colons';
+
+throws_ok { subtype 'Foo-Baz' => as 'Item' }
+qr/contains invalid characters/,
+ 'Type names cannot contain a dash (via subtype sugar)';
+
+lives_ok { subtype 'Foo.Bar::Baz' => as 'Item' }
+'Type names can contain periods and colons (via subtype sugar)';
+
+is( Mouse::Util::TypeConstraints::find_or_parse_type_constraint('ArrayRef[In-valid]'),
+ undef,
+ 'find_or_parse_type_constraint returns undef on an invalid name' );
+
+is( Mouse::Util::TypeConstraints::find_or_parse_type_constraint('ArrayRef[Va.lid]'),
+ 'ArrayRef[Va.lid]',
+ 'find_or_parse_type_constraint returns name for valid name' );